Common sense rules out any possibilty of a sequal.
- Hotel Dusk is a finished story (the hotel not the game)
- Developers are Japanese not Korean
- They have only announced a sequal to Another Code on Wii/out.

I hope Cinq does something with the Hotel Dusk universe (a game featuring Bradley perhaps?) on the DS or Wii, I'm going to make sure I buy the Another Code/Trace Memory game for the Wii so that they'll understand the demand is out there to continue with this series.

And don't forget about their survival/horror/mystery game coming out on the DS, Again.